岩土掩埋中可穿戴无线呼救通信的可行性研究

The Feasibilty Study of Wearable Wireless Communication In Rock and Soil

滑坡等灾害发生后,如果可穿戴的无线呼救设备,在地面无线信号的激励下,可将被掩埋人员的身份等信息发送出来,进行定位与人数统计,有利于提高救援效率减少损失。根据天线辐射理论公式估算,开放的433MHz频率能够用于可穿戴无线呼救通信。据此选用Si4463和STM32F103系列芯片设计了无线搜呼救设备的模型,并设计了无线收发程序和防碰撞程序软件。相似性模拟实验表明,微型、低功率433MHz频段发收设备,岩土到地面的单程有效通信距离约为8.5m。

When the landslide occurres, if wearable devices excited by wireless signal on the ground send out the identify information of buried people, rescue workers can locate and count the number of buried people, which is conducive to improve the rescue efficiency and reduce losses. According to the theoretical formula of antenna radiation, the open 433MHz frequency can be used for the wearable wireless communication. Based on Si4463 and STM32F103 series chip, the model of wireless search and help devices is designed and the software of wireless transceiver and anti collision program are also designed. The results of similarity simulation experiment show that , the distance of the micro and low power 433MHz frequency equipment from earth to ground is about 8.5m.